| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Evaluation as an approach towards the improvement of regional vocational training and labour market policy | 978-92-826-5O74-5 (92-826-5O74-X) | 1992 |
R.D. · Ralf Dierenbach · Ralf Dohrenbusch · Ralf Dornbusch · Rolf Dornberger